Today's difficult 8 was a little more difficult that usual for me. The three cell, L-shaped cage that starts in the seventh row is labeled "6^". That looks like 6^1^1 to me, so I entered 1,6,1 early on, but soon ran into a contradiction.

It turns out that 1,6,1 is incorrect and that the label should be "216^". Oddly, both 1,6,1 and the correct triplet passed the puzzle's audits.